Enumerations
This section lists all enumerations used throughout the plugin.
Each enum reflects the constants defined in the official Google Play Billing Library, adapted for use in Unreal Engine.
These enums are primarily used to describe product types, purchase states, and billing response codes returned by the API.
EProductType
Defines the type of product available in the Google Play Console.
| Name | Description |
|---|---|
| INAPP | One-time in-app product (consumable or non-consumable). |
| SUBS | Subscription product that renews automatically or follows an active base plan. |
ERecurrenceMode
Describes how a subscription pricing phase repeats over time.
| Name | Description |
|---|---|
| Unknown | The recurrence mode is not defined or returned by the Billing Library. |
| InfiniteRecurring | The phase repeats indefinitely until the user cancels the subscription. |
| FiniteRecurring | The phase repeats a fixed number of times (e.g., 3 discounted months). |
| NonRecurring | The phase occurs only once and does not repeat. |
EPurchaseState
Represents the current processing state of a purchase returned by the Google Play Billing Library.
| Name | Description |
|---|---|
| Unspecified | The purchase state is unknown or not set. |
| Purchased | The purchase was completed successfully and the item is owned by the user. |
| Pending | The purchase is awaiting payment or user confirmation (pending state). |
EFeatureType
Defines supported billing features that can be checked using the Google Play Billing client.
| Name | Description |
|---|---|
| SUBSCRIPTIONS | Support for querying and purchasing subscription products. |
| SUBSCRIPTIONS_UPDATE | Ability to update or replace an active subscription with another plan. |
| PRICE_CHANGE_CONFIRMATION | Allows launching a price change confirmation flow for active subscriptions. |
| IN_APP_MESSAGING | Enables in-app messaging features such as promotional or confirmation dialogs. |
| PRODUCT_DETAILS | Support for querying product details and performing purchases via the Billing Library. |
EBillingResponseCode
Represents response codes returned by the Google Play Billing Library after performing billing operations.
| Name | Description |
|---|---|
| OK | The operation completed successfully. |
| USER_CANCELED | The user canceled the purchase flow. |
| SERVICE_UNAVAILABLE | Network connection is down or the service is temporarily unavailable. |
| BILLING_UNAVAILABLE | Billing API version is not supported for the requested type. |
| ITEM_UNAVAILABLE | The requested product is not available for purchase. |
| DEVELOPER_ERROR | Invalid configuration or request parameters in the developer’s code. |
| ERROR | A generic error occurred during the operation. |
| ITEM_ALREADY_OWNED | The user already owns this item. |
| ITEM_NOT_OWNED | The user does not own this item. |
| NETWORK_ERROR | A network error occurred during the purchase flow. |
| SERVICE_DISCONNECTED | The connection to the Google Play service was lost. |
| FEATURE_NOT_SUPPORTED | The requested feature is not supported on the current device or account. |
| SERVICE_TIMEOUT | The request to the billing service timed out. |
| UNKNOWN | An unknown or unexpected response was returned. |